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  • Which one is better to have auto-implemented property with private setter or private field and property just getter?

    - by PLB
    My question may be a part of an old topic - "properties vs fields". I have situation where variable is read-only for outside class but needs to modified inside a class. I can approach it in 2 ways: First: private Type m_Field; public Type MyProperty { get { return m_Field; } } Second: public Type MyProperty { get; private set; } After reading several articles (that mostly covered benefits of using public properties instead of public fields) I did not get idea if the second method has some advantage over the first one but writing less code. I am interested which one will be better practice to use in projects (and why) or it's just a personal choice. Maybe this question does not belong to SO so I apologize in advance.

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  • Can I send a POST form in an encoding other than of its body?

    - by Daziplqa
    Hi gang, I've Html page that looks like: <HTML> <meta http-equiv='Content-Type' content='text/html; charset=gb2312'> <BODY onload='document.forms[0].submit();'> <form name="form" method="post" action="/path/to/some/servlet"> <input type="hidden" name="username" value="??"> <!-- UTF-8 characters --> </form> </BODY> </HTML> As you can see, the content of this page is UTF-8, but I need to send it with GB2312 character encoding, as the servlet that I am sending this page to expects from me GB2312. Is this a valid scenario? Because in the servlet, I couldn't retive these chines characters back using a filter that sets the character encoding to GB2312!! Please help

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  • problem with logout script in php

    - by user225269
    I'm a beginner in php, and I am trying to create a login and logout. But I am having problems in logging out. My logout just calls for the login form which is this: <? session_start(); session_destroy(); ?> <table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC"> <tr> <form name="form1" method="post" action="checklogin.php"> <td> <table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF"> <tr> <td colspan="3"><strong>Member Login </strong></td> </tr> <tr> <td width="78">Username</td> <td width="6">:</td> <td width="294"><input name="myusername" type="text" id="myusername"></td> </tr> <tr> <td>Password</td> <td>:</td> <td><input name="mypassword" type="text" id="mypassword"></td> </tr> <tr> <td>&nbsp;</td> <td>&nbsp;</td> <td><input type="submit" name="Submit" value="Login"></td> </tr> </table> </td> </form> </tr> </table> My problem is, when I try to press the back button in the browser. Whoever user is using it can still access what is not supposed to be accessed when a user hasn't logged in. Do I need to add a code on the user page? I have this code on the user page: <? session_start(); if(!session_is_registered(myusername)){ header("location:main_login.php"); } ?> What can you recommend that I would do so that a script will prompt to enter the username and password again when a user clicks on the back button.

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  • Calling C++/CLI Method with System::DateTime parameter requires 'ValueType' as a parameter?

    - by David Ipsen
    I'm attempting to call a method written in C++/CLI from C#. The C++/CLI code is used to update a TIMESTAMP column in an Oracle database, given a record ID and the System::DateTime object which is the .NET compatible data type for Oracle's TIMESTAMP type. The method I am calling has the following prototype: bool ChangeJobUpdateDate (int jobIdIn, System::DateTime^ updateDateIn) I've added a reference to this DLL project in a test project that I made; I'm writing the tests in C#. However, when I try to call this method from the C# unit test project, the function appears to have the following method declaration (via intellisense): bool ChangeJobUpdateDate (int jobIdIn, ValueType updateDateIn) I'm admittedly not that familiar with C++/CLI, so is there something I'm missing?

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  • How to call AJAX API function from Windows App?

    - by stiopa
    Some company is providing me with web-based API for using their services. I have no problem calling this API functions from within web brower: <html xmlns="http://www.w3.org/1999/xhtml"> <head> <script type="text/javascript" src="http://someaddress.com?&key=somekey"></script> <script type="text/javascript"> var object = new SomeObject(); object.SomeFunction(); </script> </head> I am interested in return value of SomeFunction(). How would I get this return value from windows application?

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  • How does Git know which Index blob to add to a tree?

    - by drozzy
    In Pro Git Ch9 the author says: Git normally creates a tree by taking the state of your staging area or index and writing a tree object from it. My question is how does git know which of two consequitive index entries to create the Tree object from? For example: $ echo 'First change' > one.txt $ git add one.txt $ find .git/objects -type f .git/objects/1f/755a7fffe4 //first index entry $ echo 'Second change' > one.txt $ git add one.txt $ find .git/objects -type f .git/objects/2d/234asdf2 //second index entry $ git commit -a -m "Initial commit" $ git cat-file master^{tree} 100644 blob 2d234asdf2 one.txt //How did it know not to take 1f755?? Does it just look at the blob timestamps? Also - what happens to the first blob created - no one is referencing it. Does it just get destroyed or forgotten?

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  • Variable pre-fixes, Visual Studio 2010 onwards?

    - by thedixon
    I'm a bit bewildered on this subject, as I relate variable prefixes to being a thing of the past now, but with Visual Studio 2010 onwards (I'm currently using 2012), do people still do this and why? I only ask because, these days, you can hover over any variable and it'll tell you the variable type and scope. There's literally no requirement for pre-fixing being there for readability. By this I mean: string strHello int intHello etc. And I'm being language/tool biased here - as Visual Studio takes a lot of the legwork out for you in terms of seeing exactly what type the variable is, including after conversions in the code. This is not a "general programming" question.

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  • SQL-Join with NULL-columns

    - by tstenner
    I'm having the following tables: Table a +-------+------------------+------+-----+ | Field | Type | Null | Key | +-------+------------------+------+-----+ | bid | int(10) unsigned | YES | | | cid | int(10) unsigned | YES | | +-------+------------------+------+-----+ Table b +-------+------------------+------+ | Field | Type | Null | +-------+------------------+------+ | bid | int(10) unsigned | NO | | cid | int(10) unsigned | NO | | data | int(10) unsigned | NO | +-------+------------------+------+ When I want to select all rows from b where there's a corresponding bid/cid-pair in a, I simply use a natural join SELECT b.* FROM b NATURAL JOIN a; and everything is fine. When a.bid or a.cid is NULL, I want to get every row where the other column matches, e.g. if a.bid is NULL, I want every row where a.cid=b.cid, if both are NULL I want every column from b. My naive solution was this: SELECT DISTINCT b.* FROM b JOIN a ON ( ISNULL(a.bid) OR a.bid=b.bid ) AND (ISNULL(a.cid) OR a.cid=b.cid ) Is there any better way to to this?

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  • Sql-server Database query help

    - by menacheb
    Hi, I have a problem that I didn't manage to solve for a very long time, and I quite desperate. I have a Database (SQL Server) with table named 'ProcessData' and columns named 'Process_Name' (Data Type: nvarchar(50)), 'Start_At' (DataType: DateTime) and 'End_At' (Data Type: DateTime). I need to know for each 'Time-Interval' (let's say 1 minute) how many processes (Process_Name = PN) was open (after or equal to the 'Start_at' column and before or equal to the 'End_At' column) during this time (It can be a few rows with the same data). Does anyone know how to make this query without a 'for' loop? (It ITSELF will promote the time), (The answer will be a table with two columns (1. The time the check took place. 2. the number of open processes at this time.) and a row for each 'Time-Interval' (1 minute in this example ) Many thanks,

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  • jQuery doesn't work in <head>?!

    - by Hanz
    This code is supposed to make a slideshow out of stacked list-elements (I commented out the CSS so I can see what's going on) by fading out the topmost elements until only the first one is visible, then fade in the topmost element and the rest and start anew. If I put the script below my content inside the <body> and throw out the $(function() { it works perfectly fine, but in the <head> nothing happens. I wrote this yesterday and today I still can't see the mistake, so I'm posting it here. <!DOCTYPE html> <html> <head> <title></title> <style type="text/css"> ul { position: relative; } ul li { /*position: absolute; left: 0; top: 0;*/ } </style> <script src="jquery-1.5.1.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function() { var i = 0; var count = $('ul li').size(); function fade() { if (i < count-1) { $('ul li:nth-child('+(count-i)+')').fadeOut(300); i++; } else { $('ul li:nth-child('+count+')').fadeIn(300, function(){$('ul li').show();}); i = 0; } } $('button').click(function() { setInterval('fade()', 1000); }); }); </script> </head> <body> <button>Slideshow GO!</button> <ul id="slider"> <li><img src="1.jpg" /></li> <li><img src="2.jpg" /></li> <li><img src="3.jpg" /></li> <li><img src="4.jpg" /></li> </ul> </body> </html> Thanks

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  • C#: Get key and value types of non-generic IDictionary at runtime

    - by Yang Zou
    there. I am wondering how I can get the key and value types of a non-generic IDictionary at runtime. For generic IDictionary, we can use reflection to get the generic arguments, which has been answered here. But for non-generic IDictionary, for instance, HybridDictionary, how can I get the key and value types? Thanks. Edit: I may not describe my problem properly. For non-generic IDictionary, if I have HyBridDictionary, which is declared as HyBridDictionary dict = new HyBridDictionary(); dict.Add("foo" , 1); dict.Add("bar", 2); How can I find out the type of the key is string and type of the value is int? Did I make the question clear? Thanks.

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  • .htaccess redirect question

    - by russp
    I have a slight problem with .htaccess redirect. I have a dynamic site with 2 levels of variables - content="type -(alpha)" and ID="number" but this is very not seo friendly what I really would like to create is a rewrite rule that generates a "friendly" url for serach engines & users alike. Very much like WordPress does. Each ID is already unique (obviously) and on creation is creating a unique "permalink" field so for example ID=1 has a "permalink field" as "2009/10/27/page title" and ID=100 would be "2010/10/27 page title". I would like folder/wall.php?content=type&ID=number to redirect to folder/permalink.php/html/htm (don't mind a non dynamic extension) Any clues? - this is not right (I know) but it also "breaks" my css file RewriteEngine On RewriteRule wall/content/(.*)/ID/(.*)/ wall.php?content=$1&ID=$2 RewriteRule wall/content/(.*)/ID/(.*) wall.php?content=$1&ID=$2

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  • How to use GPS data like the double value returned by getLatitude()?

    - by Dan
    I have been searching quite a bit for an answer, but maybe I'm just not using the correct terminology. I am creating an app that will access a database to return a list of other users that are within a certain distance of the users location. I've never worked with this type of data, and I don't really know what the values mean. I'd like to do all the calculations on the backend with either MySQL or PHP. Currently, I am storing the latitude and longitude as doubles within the database. I can access them and store them, but I have no idea how I might be able to sort them based on distance. Perhaps I should be using a different type or some technique that is common in this area. TIA.

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  • Generically creating objects in C#

    - by DrLazer
    What I am trying to do is load in objects from an XML save file. The problem is those objects are configurable by the user at runtime, meaning i had to use reflection to get the names and attributes of those objects stored in an XML file. I am in the middle of a recursive loop through the XML and up to the part where I need to create an object then thought ..... ah - no idea how to do that :( I have an array stuffed with empty objects (m_MenuDataTypes), one of each possible type. My recursive loading function looks like this private void LoadMenuData(XmlNode menuDataNode) { foreach (object menuDataObject in m_MenuDataTypes) { Type menuDataObjectType = menuDataObject.GetType(); if (menuDataObjectType.Name == menuDataNode.Name) { //create object } } } I need to put some code where my comment is but I can't have a big switch statement or anything. The objects in my array can change depending on how the user has configured the app.

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  • Repeating characters in VIM insert mode

    - by Cthutu
    Is there a way of repeating a character while in Vim's insert mode? For example, say I would like to insert 80 dashes, in something like emacs I would type: Ctrl+U 8 0 - The only way I know how to do it in VIM is to exit normal mode for the repeat argument, then go back into insert mode to type the dash, then exit to insert the actual dashes, AND then go back into insert mode to carry on typing. The sequence is a really long: <ESC> 8 0 a - <ESC> a It would be nice not to switch in and out of modes. Thanks

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  • visual studio 2008 keyboard gets locked when editing source controlled files

    - by Rama
    Hi, I am facing a strange issue with editing source controlled files (especially aspx files) using visual studio 2008. when I check out and edit the file, I can edit fine for few seconds and after that keyboard gets locked and I can't type anything (it doesn't affect the files not added to source control). as soon it is locked, if I try to type, the focus shifts to solution explorer and other windows and sometimes it freezes and doesn't respond at all. I tried uninstalling and reinstalling visual studio, reinstalling the source control plug-in. none of it worked. not sure if it is my machine or my profile. Please help if you have any clues. I can't see any other solution for this except rebuilding the machine Thanks, Rama

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  • Checkbox Issue with IE8 using jquery

    - by rockers
    I have this code $('#Submit').click(function(event) { var checked = $('.inputchbox'); ......IE8 var ids= checked.map(function() { return $(this).val(); }).get().join(','); alert(ids); }); This Code return all the values which is there for Checkboxbox (.inputchbox is class for the checkbox) but If I give somethign like this var checked = $('.inputchbox input:checkbox:checked'); or var checked = $('.inputchbox input[type=checkbox]:checked'); or var checked = $('.inputchbox input[name=chk]:checked'); or var checked = $('.inputchbox').find('input[type=checkbox]:checked'); if i am giving like this nothing is working for me I am not getting the result in IE8? var checked = $('.inputchbox'); .....this is working but I am getting the checkboxes ids its doesnot checking wheather its checked or not.. I need to get only checked chekcbox id's thanks

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  • How javascript gets someother website data?

    - by user260165
    Well i am a bit confused.. I saw a service known as Zopim.. What they do is they provide you with a small piece of code: such as <!-- Start of Zopim Live Chat Script --> <script type="text/javascript"> document.write(unescape("%3Cscript src=\'" + document.location.protocol + "//zopim.com/?zopim\' type=\'text/javascript\'%3E%3C/script%3E")); </script> <!-- End of Zopim Live Chat Script --> you just need to place it in the footer and ur done.. Can any body let me know how this works and from where i can learn this.. + how can they even set the CSS with this and also the looks? Awaiting for your replies... Thanks

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  • Proper way to handle issue when porting 32 to 64 bit. Conversion from DT1 to DT2 of greater size

    - by grobartn
    So I am trying to port 32 bit to 64 bit. I have turned on the VS2008 flag for detecting problems with 64 bit. I am trying following: char * pList = (char *)uiTmp); warning C4312: 'type cast' : conversion from 'unsigned int' to 'char *' of greater size Disregard the code itself. This is also true for any pointer, because 64 bit pointer is greater than 32 bit unsigned int or int for that purpose. Given that you have to cast smaller type to greater how would you go about doing it so it correctly on both 32/64 bit systems

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  • $(document).ready(function() outside head

    - by user2103217
    I'm trying to move outside from head this code. <script type="text/javascript"> $(document).ready(function(){ $('.emoticontext').emoticonize({ }); }) </script> I would like insert into a js file. like <script src="javascripts/emoticons.js" type="text/javascript"></script> but I'm not sure how can I do it. I tried (function($) { $('.emoticontext').emoticonize({ }); $.fn.emoticonize = function(options) { ... but don't work

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  • Hide header if node body is empty - Drupal php snippet help

    - by Toxid
    Hello! I've made a content type for links, I'm trying to make a link directory. People only have to submit the link, description is voluntary. If no description is entered, I want the header that says "description" to disappear. The description field is the node body. Right now my snippet looks like this <?php if (!empty($node->body)) {?> <div class="field field-type-link field-field-link-archive"> <h3>Description</h3> <?php print $node->content['body']['#value'] ?></div> <?php }?> I expect this to check if node body is not empty, and if it isn't it'll print what's there. The problem is that the Description header is still printed out even if the node body is empty. Can anyone see what's wrong?

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  • Implementing comparision operators via 'tuple' and 'tie', a good idea?

    - by Xeo
    (Note: tuple and tie can be taken from Boost or C++11.) When writing small structs with only two elements, I sometimes tend to choose a std::pair, as all important stuff is already done for that datatype, like operator< for strict-weak-ordering. The downsides though are the pretty much useless variable names. Even if I myself created that typedef, I won't remember 2 days later what first and what second exactly was, especially if they are both of the same type. This gets even worse for more than two members, as nesting pairs pretty much sucks. The other option for that is a tuple, either from Boost or C++11, but that doesn't really look any nicer and clearer. So I go back to writing the structs myself, including any needed comparision operators. Since especially the operator< can be quite cumbersome, I thought of circumventing this whole mess by just relying on the operations defined for tuple: Example of operator<, e.g. for strict-weak-ordering: bool operator<(MyStruct const& lhs, MyStruct const& rhs){ return std::tie(lhs.one_member, lhs.another, lhs.yet_more) < std::tie(rhs.one_member, rhs.another, rhs.yet_more); } (tie makes a tuple of T& references from the passed arguments.) Edit: The suggestion from @DeadMG to privately inherit from tuple isn't a bad one, but it got quite some drawbacks: If the operators are free-standing (possibly friends), I need to inherit publicly With casting, my functions / operators (operator= specifically) can be easily bypassed With the tie solution, I can leave out certain members if they don't matter for the ordering Are there any drawbacks in this implementation that I need to consider?

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  • switch namespace by if condtion

    - by pascal
    Hi, in my C++ program I have several namespaces that contain several pointers with identical names. I then want a function to choose a namespace according to a parameter. I.e. something like: #include <iostream> namespace ns1{ double x[5]={1,2,3,4,5}; } namespace ns2{ double x[5]={6,7,8,9,10}; } int main(){ int b=1; if(b==1){ using namespace ns1; } if(b==2){ using namespace ns2; } std::cout << x[3] << std::endl; } However, this doesn't work since the compiler complains that x isn't known in that scope. I guess the problem is that "using namespace ..." is only valid within the if-statement. I think that it should be possible to switch namespaces somehow, but cannot find out how... Do you know how to do this without casting all variable separately? int main(){ int b=1; double *x; if(b==1){ x = ns1::x; } if(b==2){ x = ns2::x; } std::cout << x[3] << std::endl; } Cheers, Pascal

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  • Execution sequence inside a jquery event handler

    - by user576358
    I have a big issue with the execution squence inside this jquery handler : Was wondering if anyone has come accross this before: I have a simple form: <form action='foo.cgi' id='myForm' > <input type=text name='name' /> <input type=submit value='Find it!'/> </form> when user clicks on Find it! would like to change the cursor to 'progress' before the data is returned through an ajax call: $(document).ready(function(){ $("#myForm ").submit(function(){ $("body").css("cursor", "progress") ; htmlobj=$.ajax({url:server_url,..........); } } However: The cursor [line 2 above ] does not change until data is returned through ajax - Seems like line 3. gets executed before 2. Any help is greatly appreciated

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  • Javascript error in Setting focus to a textbox inside a lightbox(Overlay) window.

    - by Rishabh Ohri
    Hi All, I have a textbox, a button and a "AdvancedSearch" link on my aspx page. On page load, the focus is set to the textbox. On click of the "AdvancedSearch" link, a lightbox(overlay) window will be opened. I want to set focus to a textbox present within this lightbox window. I am using javascript to achieve this. The code looks somewhat like this: if( element.type != "hidden" && element.style.display != "none" && !element.disabled ) { element.focus(); return; } when the lightbox window loads, i get a javascript error - "Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus" Any idea why this error is thrown and why it is not able to set focus to the textbox in the lightbox window? Thanks, Rishab.

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